Stop cylinder vertical reciprocating flat bed press



P. F. COX

July 18, 1939.

STOP CYLINDER VERTICAL RECIPROCATING FLAT BED PRESS Filed Dec. 27, 1938 6 Sheets-Sheet 1 P. F. cox 2,166,582

STOP CYLINDER VERTICAL RECIPROCATING FLAT BED PRESS July 18, 1939.

Filed Dec. 27, 1938 6 Sheets-Sheet 2 P. F. cox 2,166,582

STOP CYLiNDER VERTICAL RECIPROCATING. FLAT BED PRESS' July 18, 1939.

' Filed Dec. 27, 1958 6 Sheets-Sheet 3 P. F. cox 2,156,582

STOP CYLINDER VERTICAL RECIPROCATING FLAT BED PRESS July 18, 1939.

Filed Dec. 2'7, 1938 6 Sheets-Sheet 4 Jul 18, 1939.

F. F. cox

STOP CYLINDER VERTICAL RECIPROCATING FLAT BED PRESS Filed Dec. 27, 1938 6 Sheets-Sheet 5 P. F. COX

July 18, 1939.

STOP CYLINDER VERTICAL RECIPROC'ATING FLAT BED PRESS 6 Sheets-Sheet 6 Filed Dec. 27, 1938 Patented July 18, 1939 STOP CYLINDER. VERTIOALREQIPROOAT- mo FLAT BED PRESS Paul F. Cox, Chicago, Ill.

Application December 27,1938, Serial No. 247,932

21 Claims.

This invention is an improvement in bed and cylinder printing presses, and its principal object is to provide an efficient web perfecting press adapted to print a web by means of flat forms of type, or other flat printing surfaces, mounted upon vertically movable beds and coacting with impression cylinders that preferably rotate during the printing strokes of the beds and are stopped during the return strokes of the beds. A further object is to provide a press which will produce good clean-cut impressionson hard-finished or book paper, and especially adapted for small printing offices which need a roll-feed web press that will be less expensive and produce a better grade of work than can be printed on the flat bed web presses now on the market.

A further object of the invention is to produce a web printing perfecting press in which the beds are mounted in a central section; the feed roll, first impression cylinder and inking mechanism for the first bed are mounted in an end section; and the second impression cylinder, inking mechanism for the second bed, and the delivery mechanism, and if desired re-winding mechanism, are mounted in another end section; this construction enables the mechanisms of the press to be completely assembled in the respective sections at the factory and shipped completeto the user; and set up in situ and secured together by ordinary mechanics, without the necessity of having an expert press mechanic assemble the parts in the buyers pressroom; this effecting a great saving to the purchaser. Further my press requires no pit, which eflects a further saving to the purchaser.

In the example shown in the accompanying drawings my press includes two vertically movable-beds which are reciprocated by crank wheels and pitmans, such beds being counter-balanced to relieve the crank pins of weight and enhance the speed of the press. The impression cylinders coact with the beds on one stroke thereof, and are stopped on the return stroke with the gaps in the cylinders (required for the blanket reel rods) adjacent the beds; in such position the gaps permit the beds to return without contacting the web, and thus obviates the necessity for employment of eccentrics or other mechanism to throw off impressions. The beds face oppositely and outwardly, and the cylinders are disposed at the outer sides of the beds, thus enabling the ink mechanisms to be arranged beneath the cylinders and fully accessible from the ends of the press.

Other minor objects and novel features of the invention will be hereinafter referred to in the detailed description of thepress illustrated in the accompanying drawings, which show one practical embodiment of my invention.

-Insaid drawings-- Fig. 1 is a side elevation of the press.

Fig. 2 is a view of the delivery end of press with the cutting cylinders removed.

Fig. 3 is a horizontal section on line 33, Fig. 1.

Fig. 4 is a diagrammatic vertical longitudinal sectional View of the press, illustrating the web leads.

Fig. 5 is a similar view showing the lead of webs when assembling re-wound web with main web.

Fig. 6 is an enlarged horizontal detail section on line E5-6, Fig. 7.

Fig. 7 is an enlarged detail view of the cylinder clutching mechanism, showing gear locked to cylinder.

Fig. 8 is a view similar to Fig. 7, showing gear freed from cylinder. 1

Fig. 9 is a detail view of the drive mechanism.

Fig. 10 is a side elevation of the press, showing the sections A, B, C spaced apart.

The press shown comprises two vertically disposed oppositely outwardly facing type beds I and 2 rigidly connected at their outer sides by cross bars 3 which hold the beds rigidly together and in sliding engagementwith vertically disposed guides 3a on the side frames of the central section B of the press (see Figs. 1 and 3). The beds may be reciprocatedvertically by means of pitmen l pivotally connected to the outer ends of a shaft 4a. (that extends between the beds and through the lower bars 3), and to crank pins on wheels 417' fixed on a transverse shaft 40 journaled in bearings-in the opposite side frames of the central section A of the press and disposed vertically above and parallel with shaft la. .(See Fig. 1.)

In the construction shown one of the wheels lb is provided with gear teeth that mesh with a pinion id on a stub shaft 4e journaled in the adjacent side frame of section B and ina bracket 4 attached thereto (see Figs. 2 and 9). On stub shaft ie is a. pulley do which may be driven by a belt 4h from any suitable motor or driver (not shown). The shaft 40 constitutes the main drive shaft of the press, and from it motion is imparted to the other mechanisms of the press.

To facilitate the operation of the beds without shock or jar, they are counterbalanced. As shown an oppositely movable weight la is connected to bed i by chains ly running over pulleys lz mounted on a shaft lw journaled in the frames of the central section B of the press above shaft 40. '(See Fig. 1.) Similarly bed 2 is counterbalanced by a weight, 23: connected to the bed by chains 2y running over pulleys 22 on a shaft 210 mounted on the central section B of the press. The counterbalancing weights may be guided by and between the beds, as indicated in Figs. 1 and 3.

Cooperating with bed I is an impression cylinder 6 which is journaled in bearings in the infeed section A of the press, and is disposed opposite the upper end of bed I when said bed is in its lowest position. The cylinder 6 has bearers 6a engaging bearers on the bed (Fig. 3) and on one of the cylinder journals is a gear 6b that meshes with a rack lb on bed I.

Suitable clutches are provided by which the,

gear 6b is automatically locked to and disengaged from cylinder 6 at such times that the cylinder will be rotated at a peripheral speed in unison with the travel of the bed during the printing (or down) stroke of the bed, and will be stopped during the non-printing (or up) stroke of the bed.

In the construction shown (see Figs. 6 to 8) the gear 6b is loose on the shaft of cylinder 6 and has a transverse slot in its outer face for engagement with a lock bar 60 which is attached to the inner end of a rod 6d that is normally impelled outwardly by an expansion spring 6e guided in a bore in the shaft of cylinder I5; said shaft also having a transverse slot to permit lateral movement of the bar 60 into and out of. the slot in gear 6b. A sleeve 6 is loosely mounted on the cylinder shaft, between gear 6?) and the frame, and is locked against rotation by a finger 6g attached to the frame. In the inner end of the sleeve adjacent gear 6b is a slot into which lock bar 60 enters when it is disengaged from gear 6b. On the inner end of sleeve (if is loosely mounted a cam 61' having a cam surface 69' adapted to engage bar 60, and said cam is provided with a peripheral stud 61:: adapted to be engaged by a pin 6m on gear 6b. On sleeve 67' is slidably mounted a plate 60 which is provided with pins 811 engaging holes in the adjacent side frame, and expansion springs Iiq on said pins normally press plate 60 toward and against cam 62'.

Fig. 7 shows the parts in positions assumed when lock bar 60 has been pushed into the slot in gear 6b by cam 61'. This occurs as bed I reaches its uppermost position, at which time the grooves in gear 6band sleeve 6) coincide. Then while the bed I moves down the printing cylinder 6 makes one revolution, stops with its gap opposite the bed, and as the bed reaches its lowermost position the lock bar is disengaged from gear 612, and withdrawn into sleeve 6f, so that on the upstroke of the bed the cylinder is stationary. As the bed rises the gear 6brotates in a reverse direction, but cylinder 5 remains stationary. The lock bar is prevented from disengaging, gear 6b at a half revolution of. the cylinder by the cam 67', which remains in the position shown in Fig. '7 until just before the position shown in Fig. 8 is reached. As the bed rises gear 611- rotates in opposite direction until pin 6m (Fig. '7) engages opposite side of lug 610, Fig. 8. As gear 6b nears end of rotation in reverse direction (as bed rises) pin 6m eventually contacts lug 6k from the opposite side and moves cam 52' to the right (Fig. 8).

Fig. 8 shows the position of parts just after the lock bar has been disengaged from gear 6b, and engaged with the sleeve 67'. The pin 6m (moving in reverse direction) has engaged lug 6k and moved cam 67' toallow lock bar 60 to be drawn into the groove in the sleeve by the action of spring 66.

As cam 61' is moved to the right (Fig. 8) it .is forced outwardly on sleeve 6) moving plate 60 and compressing springs 610, but when the bed reaches its uppermost position the groove in gear.

61) coincides with that in sleeve 62' and the plate to, under pressure of springs 6p, moves the locking bar into engagement with gear 61) overcoming the resistance of spring 6e. Preferably the cam member has two cam faces as 67 spaced 180 degrees apart and adapted to engage the adjacent ends of the lock bar simultaneously.

Cooperating with bed 2 is a cylinder I which is journaled in the side frames of the delivery section C of. the press (Figs. 1 and 3) and lies opposite the upper end of bed 2 when the bed is in lowest position. Cylinder 'I has bearers Ia ooacting with bearers on bed 2, and on one of its journals is a gear 'Ib meshing with a rack 22) on bed 2. Suitable clutch means are provided whereby gear lb is automatically locked to and unlocked from cylinder 1, to cause the cylinder to rotate at a peripheral speed in unison with the travel of bed 2 during the printing stroke of said bed, and is stopped during the return nonprinting stroke of bed 2. p

In the construction shown gear 10 is locked to and disengaged from its cylinder shaft by clutch means constructed and operating like those by which cylinder 6b is locked and unlocked from its shaft as above described, and therefore fur ther detailed description of the clutch mechanism for cylinder I is unnecessary.

The bed I is supplied with ink from an inking mechanism mounted in section A below cylinder 6. The inking mechanism may be of any suitable construction. As shown it comprises a fountain 8, ductor 8a, a set of distributing rollers 81), with proper adjusting and actuating mechanism, and two form rollers 80. The particular inking mechanism used is not a feature of the present invention, and therefore further description thereof is unnecessary.

The bed 2 is also supplied with ink from a similar inking mechanism mounted in section C of the press, including a fountain 9, ductor 9a, distributing rollers 9b, and two form rollers 90. In my press I am able to use two form rollers with resultant enhanced clearness and uniformity of impressions.

Rotatably mounted on shaft 40 is a feed cylinder II with which coact feed tapes IIa. running over supporting rollers IIb and I I0 mounted on shafts journaled in the side frames of section B. The tension of. the tapes can be regu lated by rollers IId mounted in arms on a rock shaft IIe journaled in the side frames of section B, and having a crank arm engaged by a manually adjustable screw rod II j. 7 In section C of the press adjacent cylinder 7 are mounted a pair of delivery cylinders I? which deliver the sheets to a pile, or to a folding mechanism of any suitable construction. If desired the cutting blade can be'removed or rendered inoperative, so that the cylinders deliver the web to a former folder (not shown), by which it is cut and folded in the usual manner.

It'is sometimes desirable to re-wind the web after printing so that it may be subsequently refed to the folder together with a freshly printed web coming from the press in order to produce papers of larger size, or to enable the web to be re-printed in color before final discharge thereof. I have therefore provided a Ice-winding mechanism, in section C, which in the construction shown comprises a re-wind roll I3a journaled in the side frames of section C and having a pulley I3a driven by belt I3b from a pulley I30 on a shaft I3d journalled in section C. Shaft I3d has a gear I3e meshing with a compound gear and sprocket I4a on a shaft I4 journaled in section C. When re-winding said sprocketis driven by a chain I477 from a sprocket I40 on the shaft of feed cylinder II, whereby the web, when ledto the re-wind roll, is re-wound as it is printed. The belt I322 can be suitably tensioned by an adjustable roller I 3g mounted on a rock arm I32 adjustable by a manually operable screw I31 on the adjacent side frame of section C (see Fig. 1).

Suitable web guides are provided in the sections for directing the web from the roll to the feed cylinder and thence successively between the beds and cylinders to the delivery cylinders I2; or if desired to the re-wind mechanism. When the web is to be perfected and discharged to the folder, the lead is as follows:

The web 20 passes from roll W (see Figs. 1 and 4), to a guide a (in section A), thence around guide I) (in section A), thence to and imder guide 0 (in section B) and up past guide 01 to the feed cylinder II, thence over guide e (in section A) to and around a gravital looping roller 3 guided in slots I5 in the side frames of section A; thence up over a guide 9 (in section A) down to and between the impression cylinder 6 and bed I, where it receives its first impression. The web passes from cylinder 6 up over guide it mounted on arms I6 on a rock shaft IGa (in section A) which shaft can be adjusted by a manually operable screw I6b in the usual manner. From guide It the web passes above the in-feed cylinder to a guide 2' (in section C), and thence may pass down to cylinder 1, and between cylinder l and bed 2, by which it is perfected; or the web may be led from guide 2' to and under a roll I2a adjacent the upper cylinder I2, and then to and between cylinder I and the bed, and thence to the delivery cylinders I2 (see Fig. 4). The tension on the web betweenthe cylinders 6 and l is regulated by the gravital looping roller 1; and the register of the impressions is regulated by adjusting guide h. If it should be desired to deliver the web after it is printed on one side by cylinder 6 and bed I; the web could be led from guide i to and between roll I2a and upper cylinder I2, and then between cylinders I2 to the folder.

When it is desired to re-wind the web the perfected web is led from cylinder 1 between it and roller I2a (as shown in dotted line 102 in Fig. 4) up to and over a guide 7' (in section C), then down under a vertically movable looping roller is (guided in slots IT in the side frame of section C) and thence up over a guide roller Z to the rewind roll on shaft I3.

If it is desired to re-wind the web before it is perfected, it may be led direct from guide 2' to guide 7', and thence under looper it up and over guide I to the re-wind roll.

When it is desired to assemble the re-wound web with a newly printed web the direction of rotation of roller 1 and the re-wind roll I3 is reversed (see Fig. 5), and the re-wound web is led back from roll I3 over roller 1 to and under looper it up over guide 1' down to and between roll I 2a and upper cylinder I2, and is assembled with the freshly printed web and delivered therewith by the cylinders I2 to the folder. To unwind the rewound web the direction of rotation of roll Z can be reversed by any suitable means. In the construction shown a set of reversing gears his is provided to drive roll 1 during unwinding of the re-wound Web and gears I4s may be driven from and by shaft I4, but when gears I4s are to be used, gear I40 is first disengaged from roller Z, and vice versa, the pressman manually adjusting the gears into or out of operative position or engagement.

If desired an electricor other suitable dryer (not shown) can be readily arranged in the press to dry the first impressions on the web before they reach the-second impression cylinder.

The web is fed through the press by the cooperation of the cylinders with the forms on the moving beds aided'by the in-feed roll II and the discharge cylinders I2. The gravity roller 7 will ascend in the loop of web to compensate-for the dwell necessary between the rotary in-feed and the intermittently. acting cylinders. The first cylinder and bed advance the web to the second cylinder and bed, and the latter advance it to the discharge cylinders I2, and the sheets to be severed equal in length the circumference of the printing cylinders. In the stop cylinder the circumference press of the cylinders determine the length of sheets to be severed; the cylinder gaps providing for end margins of sheets. The impression cylinders are easily accessible for make ready and packing. Overlays can also be readily placed on either cylinder, which is another advantageous feature of my press.

The fountains and inking mechanisms are also easily accessible. The web does not have to pass around either fountain. The plurality of form rollers employed enhances the quality of the impressions. The quality of the product is also enhanced by the fact that the printed sides of the web (except when rewinding'is used) does not pass over any guide or looping rollers. The gravital looping roller 7 operates in a loop of the web between the in-feed and first impression cylinder, and not on a printed web; the only loop in the web when being perfected in blank paper.

The sections A, B, C, are separately completely assembled; as indicated in Fig. 10 so that they can be more conveniently shipped to user than would be possible if their frames were integral. When they have reached their destination they are mounted upon a suitable base member D and securely fastened together to form a complete unit. The sections A and C are shown as provided with inwardly extending side bars 20 and 22 which (when the sections are assembled with section B) are respectively fitted to planed surfaces on the adjacent sides of section B, and are securely'bolted thereto, as indicated in Figs. 1 and 3, so that the connected sections constitute a rigid frame; and when the sections are so united the mechanisms mounted in the respective sections will be properly operatively positioned relative to cooperating parts in the other sections.

The adjacent side frames of the sections A, B, and C virtually constitute an integral side frame, and they might be formed integral; but that would render it necessary, in large presses, to ship the press mechanisms knocked down and then assemble all the parts in situ (as is now required in ordinary press construction), which greatly enchances the expense of press erection. By making the press in sections as described, the several parts can be assembled in the sections at the factory, andthe assembled sections shipped to the purchaser, and set up in situ by ordinary mechanics.

I claim:

1. In a web printing press; a pair of oppositely facing type beds; means for vertically reciprocating said beds; an impression cylinder adjacent and coacting with each bed; means for di- :recting a Web successively between the cylinders and beds, means for feeding the web, means for looping the unprinted web between the feed and first impression cylinder, and means for delivering the web after it passes'the second bed and cylinder- 2- In a web printing press; a pair of outwardly and oppositely facing type beds; means for vertically reciprocating said, beds; an impression cylinder adjacent each bed and coacting therewith; means for directing a web successively between the cylinders and beds, means for feeding the web, means for looping the unprinted .web between the feed and first impression cylinder, means for delivering the web after it passes the second ,bed and cylinder, and an inking mechanism for each bed disposed at the outer side of the bed and below the coacting cylinder.

3. In a web printing press; a pair of oppositely facing type beds; means for vertically reciprocating said beds; an impression cylinder adjacent and coacting with each bed; means for directing a web successively between the cylinders and beds, means for feeding the web, means for looping the unprinted web between the feed and first impression cylinder, and means for delivering the web after it passes the second bed and cylinder; with a web re-winding mechanism adjacent the web delivery means, guides to direct the printed web to and from the re-wind roll, and means for looping the web between the rewind roll and delivery.

4. In a web printing press; a pair of oppositely facing type beds, means for reciprocating said beds, an impression cylinder adjacent each bed and coacting therewith, the gaps in the cylinders being opposite the beds during the non-printing strokes of the beds, gearing between the beds and their respective cylinders; means for directing a web successively between the cylinders and beds, means for feeding the web, and means for delivering the web after it passes the second bed and cylinder.

5. In a web printing press; a pair of outwardly and oppositely facing type beds, means for reciprocating said beds, an impression stop-cylinder adjacent each bed and coacting therewith, the gaps in the cylinders being opposite the beds during the non-printing strokes of the beds, gearing between the beds and their respective cylinders; means for feeding the web, means for directing a web successively between the cylinders and beds, means for looping the unprinted web between the feed and first impression cylinder, and means for delivering the web after it passes the second bed and cylinder.

6. In a web printing press; a pair of oppositely facing type beds, means for reciprocating said beds, an impression cylinder adjacent each bed and coacting therewith, the gaps in the cylinders being opposite the beds during the non-printing strokes of the beds, gearing between the beds and their respective cylinders; means for directing a web successively between the cylinders and beds, means for feeding the web, and means for delivering the web after it passes the second bed and cylinder; with a web re-winding mechanism above the web delivery, guides to direct the printed web to the re-wind roll, and means for looping the web between the re-wind roll and delivery.

7. In a web perfecting'press; a pair of type beds, an impression cylinder adjacent each bed and cooperating therewith, means for reciprocating the beds, means for counter-balancing the beds, :a"'web iii-feed mechanism, a'web looping roller between said in'-feed mechanism andthe first bed and cylinder, and web delivery mechanism beyond the second bed and cylinder; with guides for directing a web from a supply to the in-feed mechanism, thence to the looper, then .between the-first bed land cylinder, then to the second bed and'cylinder, and then to the delivery.

above the beds, a web looping roller between said in-feed mechanism and the first bed and cylinder, and web delivery mechanism beyond the second bed and cylinder; with guides for directing a web from a supply to the in-feed mechanism, thence to the looper, then between the first bed and cylinder, then over the in-feed, then to the second bed and cylinder and then to the delivery; and an inking mechanism for each bed disposed below its coacting cylinder.

9. In a-web perfecting press; a pair of type beds,,an impression cylinder adjacent each bed and cooperating therewith, a shaft above the beds, crank wheels on said shaft, pitmans connecting the wheels with the beds, bed counterbalancing weights, means connecting the weights with their respective beds; a web in-feed, a web looping roller between the in-feed and the first bed and cylinder, and web delivery mechanism beyond the second bed and cylinder; with guides for directing web from a supply to the in-feed, thence to the looper, then between the first bed and cylin der, then to the second bed and cylinder, and then to the delivery; and inking mechanism for each bed.

10. In a web perfecting press; a pair of type beds, an impression cylinder adjacent each bed and cooperating therewith, means for vertically reciprocating the beds, bed-counter-balancing weights disposed between the beds, chains connecting the weights with their respective beds, and sprockets over which the chains are looped; a web in-feed mechanism above the beds, a web looping roller between said in-feed mechanism and the first bed and cylinder, and web delivery mechanism beyond the second bed and cylinder; with guides for directing web from a supply to the in-feed mechanism, thence to the looper, then between the first' bed and cylinder, then over the in-feed, then to the second bed and cylinder, and then to the delivery.

11-. In a web perfecting press; a pair of oppositely outwardly facing type beds, an impression cylinder adjacent theupper end and outer side of each bed and cooperating therewith, means for vertically reciprocating the beds, a web in-feed mechanism above the beds, a looping roller between said in-feed mechanism and the first bed and cylinder; and'guides for directing a web from a supply up between the beds to the in-feed mechanism, thence to the looper, then between the first bed and cylinder, then over the in-feed, then to the second bed and cylinder, and thence to the delivery; with an inking mechanism for each bed disposed outside of the bed and below its coacting cylinder; a web re-winding roll abovethe delivery mechanism, and guides to direct 'the printed web to and from the rewind roll. V v,

12. In aweb'perfecting press; a pair of oppositely facing type beds, animpression cylinder adjacent the upper end of each bed and oofor erection in situ; comprising a middle section operating therewith, a shaft above the beds, crank wheels on said shaft, pitmans connecting the wheels with the beds; means for couterbalancing the beds comprising counterbalancing weights disposed between the beds, chains connecting the weights with their respective beds, and sprockets over which the chains are looped; a web in-feed mechanism above the beds, a looping roller between said in-feed mechanism and the first bed and cylinder, web delivery mechanism beyond the second bed and cylinder, guides for directing a web from a supply up between the beds to the in-feed mechanism, thence to the looper, then between the first bed and cylinder, then over the in-feed, and then to the second bed and cylinder, and thence to the delivery; and an inking mechanism for each bed disposed outside of the bed and below its coacting cylinder.

13. A sectional web perfecting press adapted to be assembled in the factory and shipped ready for erection in situ; comprising a main frame formed in three separable sections, the middle section containing opposite outwardly facing type beds, and web guides; one outer section containing an impression cylinder adapted to coact with the first type bed, and web guides; and the other outer section containing a cylinder adapted to coact with the second type bed, and web guides; the parts in the several sections when such sections are united being in operative relation.

14. A sectional web perfecting press adapted to be assembled in the factory and shipped ready for erection in situ; comprising a main frame formed in three separable sections, the middle section containing opposite outwardly facing type beds, and means for reciprocating the beds; one outer section containing an impression cylinder adapted to coact with the first type bed, and inking mechanism for said type bed; and the other outer section containing a cylinder adapted to coact with the second type bed, and inking mechanism for said second type bed.

15. A sectional web perfecting press adapted to be assembled in the factory and shipped ready for erection in situ; comprising a main frame formed in three separable sections, the middle section containing opposite outwardly facing type beds, means for reciprocating the beds, an infeed, and web guides; one outer section containing an impression cylinder adapted to coact with the first type bed, inking mechanism for said type bed, and web guides; and the other outer section containing a cylinder adapted to coact with the second type bed, inking mechanism for said second type bed, and web guides.

16. A sectional web perfecting press adapted to be assembled in the factory and shipped ready for erection in situ; comprising a main frame formed in three separable sections, the middle section containing opposite outwardly facing type beds and web guides; one outer section containing an impression cylinder adapted to coact with the first type bed, inking mechanism for said type bed and web guides; and the other outer section containing a cylinder adapted to coact with the second type bed, inking mechanism for said second type bed, and web guides; whereby when said sections are assembled and connected the web can be led to the in-feed mechanism, thence to and between the first bed and cylinder, then to and between the second bed and cylinder.

17. A sectional web perfecting press adapted to be assembled in the factory and shipped ready containing vertically movable type beds facing outwardly and oppositely, means for vertically reciprocating the beds, a web in-feed mechanism and web guides; an outer section containing a web supply, an impression cylinder adapted to coact with the first type bed, inking mechanism for said type bed, a web looping roller, and web guides; and a second outer section containing a cylinder adapted to coact with the second type bed, inking mechanism for said second type bed, web delivery mechanism, and web guides; said sections when connected enabling the web to be led from the supply to the in-feed mechanism, thence to the looper, then to and between first bed and cylinder, then over the in-feed to and between the second bed and cylinder, and then to the delivery.

18. Ina web printing press; oppositely facing type beds, means for reciprocating said beds, an in-feed roll above the beds, an impression cylinder adjacent to and coacting with each bed, gearing between the cylinders and the in-feed roll; and clutch mechanism for locking the impression cylinders to the in-feed roll on the printing strokes of the beds and for disengaging them therefrom on the return strokes of the beds.

19. In a web printing press; a pair of oppositely facing type beds, an in-feed roll above the beds, crank wheels on the in-feed roll shaft, pitmans connecting said wheels with the beds to reciprocate the beds, an impression cylinder adjacent to and coacting with each bed, gearing between the cylinders and the in-feed roll shaft; and clutch mechanism for locking the impression cylinders to the in-feed roll shaft on the printing strokes of the beds, and for disengaging them therefrom on the return strokes of the beds.

20. In a web perfecting press; a pair of oppositely outwardly facing type beds, an impression cylinder adjacent the upper end and outer side of each bed and cooperating therewith, means for vertically reciprocating the beds, means for counterbalancing the beds, a web infeed mechanism above the beds, a looping roller between said in-feed mechanism and the first bed and cylinder; and guides for directing a web from a supply up between the beds to the infeed mechanism, thence to the looper, then between the first bed and cylinder, then over the infeed, then to the second bed and cylinder, and thence to the delivery; with an inking mechanism for each bed disposed outside of the bed and below its coacting cylinder; a web rewinding roll above the delivery mechanism, and guides to direct the printed web to and from the re-wind roll, and a web looping roller between the r-e-wind roll and delivery.

21. In combination; an impression cylinder, a movable bed coacting therewith, a loose gear on the cylinder shaft meshing with a rack on the bed, a non-rotatable sleeve on the cylinder shaft adjacent the gear, a lock bar, a spring actuated rod connected with said bar and normally tending to disengage it from the gear, a movable cam member on said sleeve adapted to be intermittently oppositely rotatably shifted by interengaging pins on the cam member and gear, and a spring actuated plate engaging said cam member and adapted to overcome the rod actuating spring and cause the lock bar to engage the gear when permitted by the cam.

PAUL F. COX. 

